20455001241 has 4 divisors (see below), whose sum is σ = 27273334992. Its totient is φ = 13636667492.

The previous prime is 20455001233. The next prime is 20455001243. The reversal of 20455001241 is 14210055402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20455001241 - 2³ = 20455001233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20455001243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3409166871 + ... + 3409166876.

It is an arithmetic number, because the mean of its divisors is an integer number (6818333748).

Almost surely, 2^20455001241 is an apocalyptic number.

It is an amenable number.

20455001241 is a deficient number, since it is larger than the sum of its proper divisors (6818333751).

20455001241 is an equidigital number, since it uses as much as digits as its factorization.

20455001241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6818333750.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 20455001241 its reverse (14210055402), we get a palindrome (34665056643).

The spelling of 20455001241 in words is "twenty billion, four hundred fifty-five million, one thousand, two hundred forty-one".